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Dissertations / Theses on the topic 'Nanoparticle formation'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

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1

Maguire, Steven. "Magnetic field control of silver nanoparticle formation." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27390.

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Silver nanoparticles can be readily generated in micellar environments by ketyl radicals formed from the photoreduction of benzophenone in the presence of a suitable hydrogen donor. The yield of these ketyl radicals can be increased by extending the lifetime of the triplet radical pair through Zeeman splitting of the triplet sublevels in an externally applied magnetic field. This provides control over the rate of photogeneration of nanoparticles under very mild conditions. The rate of photogeneration can be monitored by the distinctive surface plasmon resonance absorption around 420 nm. In thi
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2

Martin, Christopher Paul. "Pattern formation in self-organised nanoparticle assemblies." Thesis, University of Nottingham, 2007. http://eprints.nottingham.ac.uk/10772/.

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An extremely wide variety of self-organised nanostructured patterns can be produced by spin-casting solutions of colloidal nanoparticles onto solid substrates. This is an experimental regime that is extremely far from thermodynamic equilibrium, due to the rapidity with which the solvent evaporates. It is the dynamics of flow and evaporation that lead to the formation of the complex structures that are observed by atomic force microscopy (AFM). The mechanisms involved in the formation of these patterns are not yet fully understood, largely because it is somewhat challenging to directly observe t
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3

Wang, Haolan. "Nanoparticle formation through the liquid arc method." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613366.

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4

Haubold, Danny, Annett Reichhelm, Alexander Weiz, Lars Borchardt, Christoph Ziegler, Lydia Bahrig, Stefan Kaskel, Michael Ruck, and Alexander Eychmüller. "The Formation and Morphology of Nanoparticle Supracrystals." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-209752.

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Supracrystals are highly symmetrical ordered superstructures built up from nanoparticles via self-assembly. While the NP assembly has been intensively investigated, the formation mechanism is still not understood. To shed some light onto the formation mechanism, we are using one of the most common supracrystal morphologies, the trigonal structures, as a model system to investigate the formation process in solution. To explain the formation of the trigonal structures and determining the size of the supracrystal seeds formed in solution, we introduce the concept of substrate-affected growth. Fur
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5

Vanella, Andrea. "Nanoparticle formation in nanoporous structures and applications." Doctoral thesis, Università di Siena, 2022. http://hdl.handle.net/11365/1210313.

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In the recent years the scientific community demonstrates an increasing interest in the study of nanoparticles and their properties, such as interaction with a surface and the adsorption/desorption characteristic. The latte properties, as well the formation and growth of nanoparticles, can be controlled by a proper light source. On the other hand having a much larger specific surface to increase the adsorbed amount of atoms, is a desirable characteristic of the system. That is on of the reason of the large exploitation of nanoporous material in many different research fields. Porous glass pres
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Voloshko, Andrey. "Nanoparticle formation by means of spark discharge at atmospheric pressure." Thesis, Saint-Etienne, 2015. http://www.theses.fr/2015STET4011/document.

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Au cours de la dernière décennie, les nanoparticules métalliques ont trouvé de nombreuses applications dans divers domaines tels que l'optique, la photonique, la catalyse, la fabrication de matériaux, les énergies renouvelables, l'électronique, la médecine et même les cosmétiques. Les nouveaux développements de ces applications nécessitent des méthodes de synthèse de nanoparticules fiables donnant une grande quantité de nanoparticules aux propriétés spécifiques. Les méthodes à base de plasma, tels que des décharges d'étincelles et d’arcs sont parmi les plus prometteuses car elles permettent un
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7

Huo, Zhijie. "Modelling of Soot Nanoparticle Formation in Turbulent Flames." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/24858.

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Soot emission from hydrocarbon fuel combustion is a major source of particulate pollution. The increasingly stringent regulations on emissions have necessitated the developments of soot models to aid designs of combustion devices with cleaner performance. Such models will also make valuable contributions in designing and optimising processes that produce beneficial carbonaceous particulates, e.g. carbon black plants and processes requiring enhanced soot-induced radiation. The present work aims to develop a detailed soot model and implements the model in the sparse multiple mapping conditionin
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8

Tobler, Dominique Jeanette. "Molecular pathways of silica nanoparticle formation and biosilicification." Thesis, University of Leeds, 2008. http://etheses.whiterose.ac.uk/359/.

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Biosilicification and silica nanoparticle formation occur in many modem terrestrial environments and they also played an important role in ancient geological settings. This thesis presents results from (i) field studies in Icelandic geothermal waters that aimed at quantifying the parameters that control the growth rate and texture of sinters and the diversity and silicification of associated microbial communities and (ii) lab studies that focussed on the kinetics and mechanisms of silica nanoparticle forination under conditions mimicking natural geothermal environments. The analysis of growth
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9

Lin, Jiashu. "La formation et le transport des particules dans le plasma froid." Thesis, Orléans, 2020. http://www.theses.fr/2020ORLE3029.

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Les plasma poudreux sont des plasmas qui contiennent des particules solides dont les tailles vont quelques nanomètres à quelques dizaines de micromètres. La présence de ces particules solides, dans les plasmas, a été découverte dans les procédés de l'industrie de microélectronique. Les particules dans le plasma étaint considérées comme la source principale de la contamination de ces procédés. Les premiers travaux de recherche était focalisées sur les méthodes et moyens de les éliminer et d'empêcher leur formation. Suite à l'identification des différentes phase de formation et la découverte de
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10

Marichal, Laurent. "Interactions protéines-nanoparticules : émergence de nouveaux facteurs déterminant la formation de la couronne de protéines." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS100/document.

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Les nanoparticules sont de plus en plus présentes dans notre quotidien et leur présence dans les organismes vivants est aujourd’hui avérée. Aussi, dans un milieu biologique, des protéines recouvrent spontanément la surface des nanoparticules pour former une couronne de protéines. Suivant la composition de cette couronne, une nanoparticule acquiert une "identité biologique" spécifique qui peut conditionner sa biodistribution ainsi que son éventuelle toxicité.De nombreuses zones d’ombre persistent quant à la connaissance des mécanismes d’adsorption des protéines sur les nanoparticules. Deux cara
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11

Mullaugh, Katherine M. "Formation and persistence of cadmium sulfide nanoparticle in aqueous solution." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 232 p, 2009. http://proquest.umi.com/pqdweb?did=1885682071&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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12

Miclea, Paul-Tiberiu. "Formation and characterization of metal nanoparticle coatings on oxide nanospheres." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965234754.

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13

Song, Delong. "Starch crosslinking for cellulose fiber modification and starch nanoparticle formation." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39524.

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As a low cost natural polymer, starch is widely used in paper, food, adhesive, and many other industries. In order to improve the performance of starch, crosslinking is often conducted either in the processes of starch modification or during the application processes. Many crosslinkers have been developed in the past for crosslinking starch. Ammonium zirconium carbonate (AZC) is one of the common crosslinkers for crosslinking starch in aqueous solutions, having been widely used as a starch crosslinking agent in paper surface coating for more than 20 years. However, the mechanisms of starch cro
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14

Vancea, Ioan. "Pattern formation in nanoparticle suspensions : a Kinetic Monte Carlo approach." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8420.

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Various experimental settings that involve drying solutions or suspensions of nanoparticles often called nano-fluids have recently been used to produce structured nanoparticle layers. In addition to the formation of polygonal networks and spinodal-like patterns, the occurrence of branched structures has been reported. After reviewing the experimental results, the work presented in this thesis relies only on simulations. Using a modified version of the Monte Carlo model first introduced by Rabani et al. [95] the study of structure formation in evaporating films of nanoparticle solutions for the
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15

Mendoza, Gonzalez Norma Yadira. "CFD Modeling of nanoparticle formation in a plasma synthesis reactor." Mémoire, Sherbrooke : Université de Sherbrooke, 2003. http://savoirs.usherbrooke.ca/handle/11143/1206.

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16

Akroyd, Jethro. "Mean reaction rate closures for nanoparticle formation in turbulent reacting flow." Thesis, University of Cambridge, 2012. https://www.repository.cam.ac.uk/handle/1810/244968.

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This thesis investigates mean reaction rate closures for turbulent reacting flow. The closures model the mean rate of reaction in the flow and are applied to simulations of nanoparticle formation. The simulations couple detailed chemical reaction, particle population dynamics and turbulent flow, and offer the potential to improve the understanding of a range of industrial processes. The numerical behaviour of a mean reaction rate closure based on the direct quadrature method of moments using the interaction by exchange with the mean micromixing model (DQMoM-IEM) is studied in detail. An analyt
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17

Altman, Igor, and n/a. "Peculiarities of Nanoparticle Formation and Implications to Generation of Environmental Aerosols." Griffith University. School of Environmental Engineering, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051111.122816.

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This Thesis considers peculiarities of nanoparticle formation from the gas in different systems. The main role of the surface condensation in the nanoparticle growth in metal flames was established through a series of experiments and was described by the developed model. The stagnation of the post-nucleation nanoparticle growth was experimentally revealed and theoretically explained. The influence of generation conditions on the post-processing nanoparticle properties was examined. The non-isothermal approach to correct the homogeneous nucleation theory was developed. The results of this work
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18

Udoh, Christiana. "Formation of polymer-nanoparticle capsules with tuneable morphologies by solvent extraction." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/59753.

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Capsules are employed in a range of industries as essential vehicles for the storage and delivery of drugs, biologically active species, surfactants, and personal care formulations. Key performance aspects are dictated by the capsule's overall shape and dimensions, porosity and internal microstructure. Various approaches are employed in the fabrication of capsules with precise size and shape control. This work focuses on the formation of capsules by the selective removal of solvent from monodisperse solution droplets - produced using microfluidics - upon immersion in an external solvent. The m
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19

Yaacob, Khatijah Aisha. "Formation and characterisation of CdSe-TiO2 nanoparticle films by electrophoretic deposition." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/6917.

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Electrophoretic deposition (EPD) was used to form a composite layer of mercaptoundeconic acid (MUA) capped CdSe-TiO2 nanoparticle on a fluorine doped indium tin oxide (FTO) substrate. The CdSe-TiO2 layer can be employed to fabricate a quantum dot sensitized solar cells (QDSSC), increased contact between CdSe and TiO2 nanoparticles and leading to improved efficiency of the solar cells. A colloidal suspension of TOPO capped CdSe nanoparticles was prepared by the hot injection method, followed with ligand exchange in order to produce MUA capped CdSe nanoparticles. CdSe particle of diameter in the
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20

Altman, Igor. "Peculiarities of Nanoparticle Formation and Implications to Generation of Environmental Aerosols." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/366347.

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This Thesis considers peculiarities of nanoparticle formation from the gas in different systems. The main role of the surface condensation in the nanoparticle growth in metal flames was established through a series of experiments and was described by the developed model. The stagnation of the post-nucleation nanoparticle growth was experimentally revealed and theoretically explained. The influence of generation conditions on the post-processing nanoparticle properties was examined. The non-isothermal approach to correct the homogeneous nucleation theory was developed. The results of this work
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21

Faivre, Damien. "Biological and biomimetic formation and organization of magnetic nanoparticles." Thesis, Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7202/.

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Biological materials have ever been used by humans because of their remarkable properties. This is surprising since the materials are formed under physiological conditions and with commonplace constituents. Nature thus not only provides us with inspiration for designing new materials but also teaches us how to use soft molecules to tune interparticle and external forces to structure and assemble simple building blocks into functional entities. Magnetotactic bacteria and their chain of magnetosomes represent a striking example of such an accomplishment where a very simple living organism contro
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22

Chittipotula, Thirumalesha [Verfasser], and Dominique [Akademischer Betreuer] Thevenin. "Numerical prediction of nanoparticle formation in flames / Thirumalesha Chittipotula. Betreuer: Dominique Thévenin." Magdeburg : Universitätsbibliothek, 2012. http://d-nb.info/1053914326/34.

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23

Menéndez-Manjón, Tartiere Ana [Verfasser]. "Metal nanoparticle formation by laser ablation in liquids / Ana Menéndez-Manjón Tartiere." Hamburg : tredition, 2012. http://d-nb.info/1027046932/34.

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24

Jenei, István Zoltán. "Nanoparticle assisted tribofilm formation and material transfer studied with SEM and TEM." Doctoral thesis, Stockholms universitet, Fysikum, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-114745.

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The discovery and subsequent synthesis of metal containing fullerenes- IFS (Inorganic Fullerene-like Structures) by R. Tenne et al. has generated considerable scientific interest with great potential impact in many industrial application areas such as lubrication. The lubrication mechanism (tribofilm formation) via exfoliation and deposition of the atomic layers from this cage-like IF-particles was revealed and demonstrated first by this research group. The incorporation of the nanoparticles into lubricants (oils, greases) is however not straightforward. When two surfaces are sliding against e
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25

VITALI, MICHELE. "Dynamics of nanoparticle-protein corona: formation, evolution and insight on protein structure." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2018. http://hdl.handle.net/10281/199091.

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In tamponi fisiologici, le proteine formano complessi transitori con nanoparticelle (NP), mediati da adsorbimento competitivo alla superficie di quest’ultime, fino alla formazione di una corona proteica stabile (HPC). Lo studio della dinamica d’interazione è fondamentale per ideare terapie basate su NP, in quanto l'HPC determina l'identità biologica delle NP in vivo. La forte affinità tra superfici di NP e proteine può compensare la destabilizzazione che le NP sperimentano in tamponi ad elevata forza ionica, stabilizzandole. Quest’interazione è immediata (soft -non stabile -PC) ma evolve nel t
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26

Souva, Matthew Scott. "High Throughput Block Copolymer Nanoparticle Assembly Methods." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503101272745765.

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27

Zhang, Xiaolu. "NANOPARTICLE BEHAVIOR IN BIOLOGICAL GELS AND BIOFLUIDS: THE IMPACT OF INTERACTIONS WITH CHARGED BIOGELS AND THE FORMATION OF PROTEIN CORONAS ON NANOPARTICLES." UKnowledge, 2015. http://uknowledge.uky.edu/chemistry_etds/57.

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With the rapid growth of nanotechnology, situations where nanomaterials will interact with biological systems will unquestionably grow. Therefore, it is increasingly understood that interactions between nanomaterials and biological environments will play an essential role in nanomedicine. Biological polymer networks, including mucus and the extracellular matrix, serve as a filter for the exchange of molecules and nanoparticles. Such polymer networks are complex and heterogeneous hydrogel environments that regulate transport processes through finely tuned particle-network interactions. In chapt
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Schneider, Cornelia Marion [Verfasser]. "Investigation of Early Clusters in Nanoparticle Formation by Analytical Ultracentrifugation / Cornelia Marion Schneider." Konstanz : KOPS Universität Konstanz, 2019. http://d-nb.info/122457561X/34.

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29

Mendoza, Gonzalez Norma Yadira. "Theoretical study of nanoparticle formation in thermal plasma processing Nucleation, coagulation and aggregation." Thèse, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1831.

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This work presents a mathematical modeling study of the synthesis of nanoparticles in radio frequency (RF) inductively coupled plasma (ICP) reactors. The purpose is to further investigate the influence of process parameters on the final size and morphology of produced particles. The proposed model involves the calculation of flow and temperature fields of the plasma gas. Evaporation of raw particles is also accounted with the particle trajectory and temperature history calculated with a Lagrangian approach. The nanoparticle formation is considered by homogeneous nucleation and the growth is ca
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Schneider, Cornelia M. [Verfasser]. "Investigation of Early Clusters in Nanoparticle Formation by Analytical Ultracentrifugation / Cornelia Marion Schneider." Konstanz : KOPS Universität Konstanz, 2019. http://d-nb.info/122457561X/34.

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31

Rothfuß, Hannah [Verfasser], and C. [Akademischer Betreuer] Barner-Kowollik. "Single-Chain Nanoparticle Formation Induced by Metal Complexation / Hannah Rothfuß ; Betreuer: C. Barner-Kowollik." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/118832182X/34.

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32

Izuhara, Masayasu. "Prevention of neointimal formation using miRNA-126-containing nanoparticle-conjugated stents in a rabbit model." Kyoto University, 2018. http://hdl.handle.net/2433/231000.

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33

Lohse, Samuel E. 1981. "Direct Synthesis of Thiolate-Protected Gold Nanoparticles Using Bunte Salts as Ligand Precursors: Investigations of Ligand Shell Formation and Core Growth." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/11531.

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xx, 242 p. : ill. (some col.)<br>Applications of ligand-protected nanoparticles have increased markedly in recent years, yet their controlled synthesis remains an under-developed field. Nanoparticle syntheses are highly specialized in their execution and often possess significant limitations. For example, the synthesis of thiol-stabilized gold nanoparticles (AuNPs) with core diameters greater than 5.0 nm is difficult to achieve using existing methods. This dissertation describes the development of a synthetic strategy for thiolate-stabilized AuNPs over a wide range of core sizes using alkyl th
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34

Paskevicius, Mark. "A nanostructural investigation of mechanochemically synthesised hydrogen storage materials." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/254.

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Aluminium, aluminium hydride (alane), and magnesium hydride nanoparticles have been mechanochemically synthesised in order to study their hydrogen sorption properties in contrast to the bulk. Nanoparticle formation was facilitated by the addition of a salt phase to ball milled chemical reagents that matched the reaction byproduct phase. The presence of a salt buffer during ball milling prevents agglomeration and thus restricts particle growth.Aluminium nanoparticles were mechanochemically synthesised with particle sizes from 40 – 55 nm. The LiCl salt by-product phase was removed by washing wit
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McKenzie, Lallie Cobb. "Mechanistic insights on nanoparticle formation : investigation of reaction pathways and development of controlled synthesis for triphenylphosphine-stabilized undecagold /." Connect to title online (ProQuest), 2009. http://proquest.umi.com/pqdweb?did=1798969441&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Govender, Yageshni. "Isolation, purification and characterization of a 'factor' from Fusarium oxysporum responsible for platinum nanoparticle formation." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1003982.

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Nanoparticles are microscopic particles in the nanometre range of between 1-100 nm. A wide variety of metal nanoparticles have been found to be produced by prokaryotic and eukaryotic organisms including several fungal species, when exposed to solutions containing metal salts. Previous studies have suggested that this bioreduction of metal particles may occur via an active reductase/hydrogenase enzyme process where H2 is the electron donor and positively charged platinum species act as the electron acceptors becoming reduced to a neutral metal nanoparticle. In view of this on going research, th
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Redkov, A. V., A. A. Lipovskii, and V. V. Zhurikhina. "Formation and Self-arrangement of Nanocomposite Materials via Glass Anneal in Hydrogen." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34796.

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The process of metal nanoparticles formation in glass during its annealing in hydrogen is studied. On the basis of phase transition theory the strict system of equations describing this process is developed and simulated. The simulation shows that the system has two qualitatively different solutions: continuous distribution of nanoparticles in bulk glass and Liesegang-like layers. The results of the numerical modeling agree well with known experimental data: both types of the distributions have been registered in experiments. The dependence of final nanoparticles distribution on system paramet
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Zimmermann, M., and G. Garnweitner. "Formation Studies on the Nonaqueous Synthesis of Metal Oxide Nanoparticles in a 1.5 L Reactor System." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34891.

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In the last years, the nonaqueous synthesis has been demonstrated as a highly versatile method for the simple synthesis of highly crystalline metal oxide nanoparticles and nanomaterials. Thereby, we have presented the synthesis of a multitude of different metal oxides (e.g., TiO2, ZrO2, BaTiO3, Fe3O4). The mechanisms of particle formation as well as the influence of process parameters on the particle properties however remain largely unknown so far, as the molecular mechanisms are rather complex. In this paper, we show that the synthesis of metal oxide nanoparticles is feasible also on a m
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Couëdel, Lénaïc Gaël Hervé Fabien. "Nanoparticle formation and dynamics in a complex (dusty) plasma : from the plasma ignition to the afterglow." Connect to full text, 2008. http://hdl.handle.net/2123/4121.

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Thesis (Ph. D.)--University of Sydney, 2009.<br>Includes graphs and tables. Cotutelle thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Complex Plasma Laboratory, School of Physics, Faculty of Science, University of Sydney and the degree of Docteur de l'Université Orléans. Title from title screen (viewed May 5, 2009) Degree awarded 2009; thesis submitted 2008. Includes bibliographical references. Also available in print form.
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Couedel, Lenaic Gael Herve Fabien. "Nanoparticle formation and dynamics in a complex (dusty) plasma: from the plasma ignition to the afterglow." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/4121.

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Complex (dusty) plasmas are a subject of growing interest. They areionized gases containing charged dust particles. In capacitively-coupled RF discharges, dust growth can occur naturally and two methods can be used to grow dust particles: chemically active plasmas or sputtering. The growth of dust particles in argon discharges by RF sputtering and the effect of dust particles on theplasma have been investigated from the plasma ignition to the afterglow. It was shown that plasma and discharge parameters are greatly affected by the dust particles. Furthermore, plasma instabilities can be trigge
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Couedel, Lenaic Gael Herve Fabien. "Nanoparticle formation and dynamics in a complex (dusty) plasma: from the plasma ignition to the afterglow." University of Sydney, 2008. http://hdl.handle.net/2123/4121.

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Doctor of Philosophy(PhD)<br>Complex (dusty) plasmas are a subject of growing interest. They areionized gases containing charged dust particles. In capacitively-coupled RF discharges, dust growth can occur naturally and two methods can be used to grow dust particles: chemically active plasmas or sputtering. The growth of dust particles in argon discharges by RF sputtering and the effect of dust particles on theplasma have been investigated from the plasma ignition to the afterglow. It was shown that plasma and discharge parameters are greatly affected by the dust particles. Furthermore, plasm
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Mothiba, Maborwa Tebogo. "The effects of clofazimine on mycobacterium smegmatis biofilm formation." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/31569.

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Chemotherapy of tuberculosis (TB), a disease caused by Mycobacterium tuberculosis (M. tuberculosis), is successful against actively-growing bacilli but ineffective against dormant/persistent organisms, found mainly in a protective lipid-laden granuloma, possibly necessitating the use of lipophilic antibiotics. In vitro, these bacilli are encased in lipid-rich biofilms. In this study, the antimycobacterial activity of one such agent, clofazimine, and its nanoparticle formulation, have been investigated against Mycobacterium smegmatis (M. smegmatis), as a surrogate for M. tuberculosis, by determ
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Lemoine, Asseline. "Organisation et ségrégation lors de la formation de nanoalliages d'AgCo étudiés par diffusion aux petits et aux grands angles et effet anomal." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2067/document.

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Ce travail de thèse a pour objectif d'étudier les rôles de la taille, de la composition et de la cinétique de croissance sur la morphologie, la structure, et l'état de mélange de l'argent et du cobalt dans des nanoparticules bimétalliques supportées AgCo. Dans ce but, des mesures in-situ et en temps réel par diffusion des rayons X aux petits et aux grands angles en géométrie d'incidence rasante, et en condition anomale, ont été effectuées au cours de la croissance des nanoparticules AgCo dans des conditions de dépôt simultané ou successif des métaux. Des recuits ont ensuite été réalisés afin d
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Picone, Carolina Siqueira Franco 1983. "Formação de nanopartículas por associação de biopolímeros e surfactantes = Formation of nanoparticles by biopolymer - surfactant association." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254194.

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Orientador: Rosiane Lopes da Cunha<br>Texto em português e inglês<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-20T12:57:32Z (GMT). No. of bitstreams: 1 Picone_CarolinaSiqueiraFranco_D.pdf: 4074904 bytes, checksum: 1a2779daa118fabb35ba241a8f6bf16f (MD5) Previous issue date: 2012<br>Resumo: As nano partículas possuem grande potencial para a liberação controlada de bioativos, porém ainda são pouco exploradas na área de alimentos. Neste trabalho foi estudada a formação de nanopartículas a partir da autoagrega
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Boudie, Claire. "Physical characterisation of ionic liquid solutions and their potential applications as media for nanoparticle formation or batteries." Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.725391.

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In this study, solutions of 1-ethyl-2-methylimidazolium acetate, butanoate and octanoate ILs in binary mixtures with water will be investigated with the aim to investigate the effect of aggregation by increasing the carbon chain lengths from 2 to 8 carbons of the alkyl-carboxylate anion. A wide range of techniques will be applied, starting from the characterisation of their physical properties as well as spectroscopic techniques in function of temperature and mixture compositions in order to gain a full understanding of their interaction behaviour. Furthermore, these carboxylate ionic liquids
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Ahmed, Selver. "FORMATION, DYNAMICS AND CHARACTERIZATION OF SUPPORTED LIPID BILAYERS ON SiO2 NANOPARTICLES." Diss., Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/213126.

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Chemistry<br>Ph.D.<br>This work is devoted to understanding the formation of supported lipid bilayers (SLBs) on curved surfaces as a function of lipid properties such as headgroup charge/charge density and alkyl chain length, and nanoparticle properties such as size and surface characteristics. In particular, the formation of SLBs on curved surfaces was studied by varying the size of the underlying substrate SiO2 nanoparticles with size range from 5-100 nm. Curvature-dependent shift in the phase transition behavior of these supported lipid bilayers was observed for the first time. We found tha
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Huang, Yan. "Micro- and Nanogel Formation through the Ionic Crosslinking of Polyelectrolytes." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1417781855.

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48

Flegg, Mark Bruce. "Theoretical investigation of mechanisms of formation and interaction of nanoparticles." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/31843/1/Mark_Flegg_Thesis.pdf.

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In this thesis an investigation into theoretical models for formation and interaction of nanoparticles is presented. The work presented includes a literature review of current models followed by a series of five chapters of original research. This thesis has been submitted in partial fulfilment of the requirements for the degree of doctor of philosophy by publication and therefore each of the five chapters consist of a peer-reviewed journal article. The thesis is then concluded with a discussion of what has been achieved during the PhD candidature, the potential applications for this research
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Dichiara, Anthony. "Etude chronologique de la formation de nanotube de carbone par CVD d'aérosol à l'aide de diagnostics in situ : des premiers instants à la fin de la croissance." Phd thesis, Ecole Centrale Paris, 2012. http://tel.archives-ouvertes.fr/tel-00763604.

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Dans le vaste domaine des nanosciences et nanotechnologies, les nanotubes de carbone (NTC) suscitent un intérêt particulier en raison de leur structure originale qui leur confère des propriétés exceptionnelles. Alors que le nombre d'applications ainsi que la quantité de NTC produite ne cessent d'augmenter chaque année, il est essentiel de comprendre les mécanismes régissant la formation de ces nanomatériaux afin de contrôler leur structure et leur organisation, optimiser les rendements, diminuer les risques sanitaires et environnementaux et améliorer les performances des matériaux et composant
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Wang, Dong. "Nouveaux catalyseurs recyclables pour les réactions de formation de liaisons carbone-carbone et carbone-azote." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0128/document.

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Les catalyseurs supportés sur des dendrimères et nanoparticules magnétiques acquièrent actuellement une importance accrue dans le contexte de la chimie verte et du développement durable car ils sont séparés facilement des produits de réaction par filtration ou à l’aide d’un aimant et recyclables. Dans cet esprit, la thèse a été dédiée à la synthèse, à la caractérisation et aux applications catalytiques de catalyseurs moléculaires, nano-et dendritiques immobilisés impliquant le ruthénium, le cuivre et le palladium. Les catalyseurs magnétiquement recyclables de ruthenium (II), de cuivre (I) et d
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